<?xml version='1.0' encoding='UTF-8'?>
<list>
  <external>
    <path>com.us.xyz.doc//ddl</path>
    <url>http://host/trunk/java-projects/project/com.cut.xyz/src/main/ddl</url>
    <revision>305218</revision>
  </external>
  <external>
    <path>com.us.xyz.doc//com.cut.xyz.resources</path>
    <url>http://host/trunk/java-projects/project/com.cut.xyz.resources</url>
    <revision>296160</revision>
  </external>
</list>

    @Override
    public SCMRevisionState calcRevisionsFromBuild(AbstractBuild<?, ?> build, Launcher launcher, TaskListener listener) throws IOException, InterruptedException {
        // exclude locations that are svn:external-ed with a fixed revision.                                                                                                       
        Map<String,Long> wsRev = parseRevisionFile(build,true);
        for (External e : parseExternalsFile(build.getProject()))
            if (e.isRevisionFixed())
                wsRev.remove(e.url);
        return new SVNRevisionState(wsRev);
    }

            // are the locations checked out in the workspace consistent with the current configuration?                                                                           
            for (ModuleLocation loc : getLocations(lastCompletedBuild)) {
                if (!baseline.revisions.containsKey(loc.getURL())) {
                    listener.getLogger().println(
                            Messages.SubversionSCM_pollChanges_locationNotInWorkspace(loc.getURL()));
                    return BUILD_NOW;
                }
            }
        }